Choose Tools - Options - Personalization - Own Theme.
In Select Firefox Theme dialog, click one of the Categories button, e.g. Nature.
For English localization, you will retrieve all 9 themes (they're searched for "Nature" keyword). However, for e.g. Czech localization, you will get no theme, because they're searched for "Příroda" keyword (Czech translation of "Nature").
I think the English keyword should be used to get always any result.
The feature is new in 4.4. Tested in 4.4 beta2 and RC1, Ubuntu 14.04.

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-- The LibreOffice QA Team This NEW Message was generated on: 2016-01-17